Podcast
Questions and Answers
What is a TC pipette designed to do?
What is a TC pipette designed to do?
Contain a specific volume of liquid but does not dispense that exact volume.
What does a TD pipette do?
What does a TD pipette do?
Dispense a specified volume.
A blowout pipette should dispense the last drop of liquid completely.
A blowout pipette should dispense the last drop of liquid completely.
True
What is the main purpose of transfer pipettes?
What is the main purpose of transfer pipettes?
Signup and view all the answers
What distinguishes a volumetric pipette from an Ostwald-Folin pipette?
What distinguishes a volumetric pipette from an Ostwald-Folin pipette?
Signup and view all the answers
Which type of pipette has an etched ring near the mount piece indicating it is a blowout pipette?
Which type of pipette has an etched ring near the mount piece indicating it is a blowout pipette?
Signup and view all the answers
A measuring pipette is not considered sufficiently accurate for measuring samples and calibrators.
A measuring pipette is not considered sufficiently accurate for measuring samples and calibrators.
Signup and view all the answers
What distinguishes the Mohr pipette from the Serological pipette?
What distinguishes the Mohr pipette from the Serological pipette?
Signup and view all the answers
What is the main function of a micropipette?
What is the main function of a micropipette?
Signup and view all the answers
Study Notes
Overview of Pipettes
- Pipettes are essential tools for accurately transferring measured volumes of liquid.
- Two primary categories: TC (To Contain) pipettes and TD (To Deliver) pipettes.
- TC pipets contain a specific volume but do not dispense it; TD pipets deliver the indicated volume.
Types of Pipettes
-
Blowout Pipettes
- Identified by continuous etched rings (one or two) near the top.
- Indicate that the last drop must be expelled into the receiving vessel for accurate delivery.
-
Self-Draining Pipettes
- Rely on gravity to drain liquid, not requiring additional expulsion.
Transfer Pipettes
- Designed to transfer a known volume without subdivisions.
- Includes Volumetric and Ostwald-Folin pipettes.
- Characterized by a cylindrical bulb connecting to narrow tubing with a calibration mark for accuracy.
Volumetric Transfer Pipette
- Calibrated for precise delivery of a fixed volume, primarily used for diluting solutions.
- Self-draining design enables efficient use in preparing standards or quality control materials.
Ostwald-Folin Pipette
- Features a bulb positioned closer to the delivery tip, suitable for measuring viscous liquids like blood or serum.
- Contains an etched ring to indicate it is a blowout pipette and allows complete drainage after liquid has flowed down.
Measuring Pipettes
-
Graduated pipettes that can dispense various volumes due to multiple graduation marks.
-
Not highly accurate for calibrators but useful for transferring reagents and making dilutions.
-
Mohr Pipette
- Graduations end above the tip; self-draining mechanism.
-
Serological Pipette
- Graduation marks reach down to the tip and marked with an etched ring to indicate a blowout design, draining faster due to larger orifice.
Micropipette
- Special category of measuring pipette designed for volumes less than 1 mL, providing precision in small measurements.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the essential concepts and types of pipettes used in laboratory settings. Learn about TC and TD pipettes, blowout and self-draining types, and the specifics of volumetric transfer pipettes. Test your knowledge on the characteristics and applications of these important liquid transfer tools.
